EP0663047B1 - Rohrsystem für rohrkonstruktionen - Google Patents

Rohrsystem für rohrkonstruktionen Download PDF

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Publication number
EP0663047B1
EP0663047B1 EP93920781A EP93920781A EP0663047B1 EP 0663047 B1 EP0663047 B1 EP 0663047B1 EP 93920781 A EP93920781 A EP 93920781A EP 93920781 A EP93920781 A EP 93920781A EP 0663047 B1 EP0663047 B1 EP 0663047B1
Authority
EP
European Patent Office
Prior art keywords
pipes
tubes
splines
pipe system
coupling members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93920781A
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German (de)
English (en)
French (fr)
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EP0663047A1 (de
Inventor
Hans Kühl
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0663047A1 publication Critical patent/EP0663047A1/de
Application granted granted Critical
Publication of EP0663047B1 publication Critical patent/EP0663047B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1427—Telescoping systems locking in intermediate non-discrete positions with cammed or eccentrical surfaces co-operating by relative rotation of the telescoping members or by rotation of an external collar

Definitions

  • the present invention relates to a pipe system for pipe constructions according to the preamble of claim 1.
  • Pipe constructions according to the proposed invention can advantageously be used in particular in scaffolding in construction and for stands, ladders, railings etc.
  • a telescopic tripod with three legs is known.
  • wedge profiles extending in the circumferential direction are provided on the inner surfaces of the pipes of larger diameter.
  • Elevations are provided on the outer surfaces of the tubes, which are smaller in diameter, and produce a clamping effect by running onto the spline profiles when the tubes inserted into one another are displaced relative to one another.
  • the axial forces to be achieved by the clamping are too low for use in a pipe system for pipe constructions.
  • a first relative rotation is first required in order to close the gap so that the cooperating wedge surfaces touch.
  • a further, depending on the forces to be transmitted and the relative rotation between the tubes or the tubes and the node elements, which can be determined in this respect, is required in order to achieve the desired self-locking frictional engagement. Irrespective of the direction of rotation, considerable forces can then be transmitted without play in the radial and in the axial direction, without the pipes or node elements which are connected to one another becoming detached.
  • the pole or coordinate origin of the logarithmic spiral which defines the course of the wedge surfaces, is located in the axis of the tubes or the node elements.
  • the course of the wedge surfaces in the form of a logarithmic spiral has the result that when touching opposite wedge surfaces, all points of the wedge surfaces touch and start to bear at the same time. Seen in cross section, there is a linear contact and not just a point contact.
  • the outer and / or inner circumferential or contour surfaces of the tubes or that of the tubes and the node elements are each provided with three wedge profiles lying one behind the other in the circumferential direction. In the case of the relative rotation, this leads to the self-locking frictional engagement additionally to a centering of the parts connected to one another.
  • the wedge profiles are expediently arranged in a sector-like manner at least over axial regions of the tubes or the node elements.
  • a gap can be present between the opposing spline profiles after their engagement. To close this gap and to bring the opposing wedge surfaces into contact, all that is required is a relative rotation between the connected parts. A part of the contact surfaces of the opposing wedge surfaces is lost, which can then no longer contribute to self-locking, but is only of a small amount.
  • the logarithmic spiral is indeed the mathematically exact curve shape that determines the desired full surface contact of the opposite wedge surfaces in all points.
  • the contact over the entire wedge surface can also be achieved by curves which are more or less approximated to the logarithmic spiral. Small deviations can be compensated for by the elastic and / or plastic deformability of the material of the wedge surfaces.
  • the course of the logarithmic spiral can also be generated by a plurality of circles of curvature which have center points of the circle offset with respect to the axes of the tubes or the node elements. Circular arcs with radii, centers and center angles can also be found, which only show imperceptible deviations from the course of a logarithmic spiral in the case of inwardly shaped wedge surfaces.
  • the preferred slope of the wedge surfaces to achieve the desired self-locking frictional engagement is between 1: 5 and 1: 500, preferably between 1:20 and 1: 100. In the case of slopes above or below, the desired self-locking frictional engagement can no longer be achieved because either the connected parts of the pipe system slip too early or the relative rotation is no longer possible.
  • the wedge profiles of the tubes extend over their entire length.
  • the pipes can also be shortened if they are used in particular in connection with the node elements for pipe constructions which, such as railings, should not have any jumps in diameter.
  • the spline profiles inside the tubes can extend over their entire length and the spline profiles on the outside of the tubes can only extend over the length with which they can be inserted into the spline profiles or arms of the node elements.
  • a telescopic insertion of the pipes is possible if they have different diameters in order to connect them to each other in any mutual longitudinal positions, in order to produce pipe constructions of any dimensions in a simple manner. If such a construction is no longer needed, it can easily be dismantled and the pipes can be used for other purposes.
  • Pipes which are connected to one another can also be butted by providing node elements in the form of connectors arranged in the pipes with spline profiles arranged on their outer circumference or in the form of sleeves with spline profiles arranged on their inner circumference, into which the pipe ends can be inserted.
  • pipe pieces inserted with wedge profiles arranged on their outer circumference can be provided in the interior of the pipes.
  • the free end of the tubes can be provided with a pin having spline profiles on the outer circumference or a cap having spline profiles on the inner circumference. This can lead to a sealing effect generate a seal between the free end of the tube and the pin or cap.
  • the node elements used can in particular be straight, T-shaped, angular and / or cruciform. In the case of the straight-line node element, engagement areas for a turning or counter-holding tool can be arranged between the two pins or arms which have the spline profiles.
  • the tubes and the node elements on their inner or outer surfaces can also be provided with rotary stops which interact in pairs and which limit the angle of rotation during the production of the frictional connection.
  • the rotary stops can preferably consist of at least one spring on the tube or on the node element and of a groove which is matched to this spring and has a circumferentially limited extent on the node element or tube.
  • pin 1 denotes, for example, an inner tube or an inner arm of a node element at a connection point, and accordingly an outer tube or an outer arm of a node element is designated by the receptacle 2.
  • the pin 1 has, over an imaginary cylinder surface 4, three cams 5 projecting above it, the positively curved back surfaces or wedge surfaces 6 rising flat and falling steeply from their highest point to the lowest point of the adjacent cam 5 or onto the cylinder surface 4. They therefore form a convex wedge profile.
  • the receptacle 2 has grooves 8 over an imaginary cylindrical surface 3 having a somewhat larger diameter than the cylindrical surface 4, the negatively curved fillet surfaces or wedge surfaces 9 of which, starting from the cylindrical surface 7, fall flat to a deepest point. They therefore form a concave wedge profile.
  • the receptacle 2 has grooves 8 over an imaginary cylindrical surface 3 having a somewhat larger diameter than the cylindrical surface 4, the negatively curved fillet surfaces or wedge surfaces 9 of which, starting from the cylindrical surface 7, fall flat to a deepest point. They therefore form a concave wedge profile.
  • the gap 10 is not necessary, it just makes it easier to plug the corresponding parts into each other.
  • the width of the Gap 10 is kept small, in any case considerably less than the difference between the distance of the maximum point of a cam 5 or a groove 8 from the longitudinal axis 11 of the pin 1 or the receptacle 2. Nevertheless, the pin 1 can easily be due to this gap 10 when merging be pushed into the receptacle 2.
  • the gap 10 also determines the radial dimension by which the grooves 8 and the cams 5 overlap when viewed in the circumferential direction, which essentially determines the possibility of "skipping" of grooves 8 and cams 5 when producing the self-locking frictional connection.
  • the pin 1 is inserted axially into the receptacle 2 to the intended length (FIG. 1) . Then the pin 1 in the receptacle 2 is turned clockwise. As a result, the distance between the wedge surfaces 6, 9 of the pin 1 or the receptacle 2 is reduced until all the wedge profiles are in each case in pairs, that is to say the gap 10 is no longer present.
  • the wedge profiles of the pin 1 and the receptacle 2 are elastically deformed, as a result of which, in this fastening position (FIG. 2), the pin 1 is clamped in the receptacle 2 in a self-locking manner in order to secure it, however again create releasable connection between receptacle 2 and pin 1.
  • the angle over which the relative rotation takes place depends on the width of the gap 10 between the pin 1 and receptacle 2, on the elasticity of the material of the wedge profiles, on their slope, on the number of cams 5 or grooves 8 around the circumference of pin 1 or receptacle 2 and other parameters.
  • the connection has a flat torque curve over the angle of rotation, so that the load torque, when the self-locking frictional engagement is achieved, does not deviate significantly from the desired value in the event of deviations from the intended angle of rotation.
  • FIG. 3 and 4 show a set of three tubes 12, 13 and 14 which are coordinated in diameter for telescopically fitting one into the other.
  • the tube 12 with the largest diameter has a cylindrical outer diameter, the convex spline profiles on its inner diameter (FIG. 4 ) are arranged.
  • the tube 13 with the mean diameter is provided with the spline profiles on both the outside and the inside, the convex spline profiles on the outside being matched to the concave spline profiles of the tube 12, which has the smallest diameter, and the concave spline profiles inside the tube 13 are matched to the convex wedge profiles of the tube 14.
  • the tube 14 has a cylindrical diameter on the inside.
  • the spline profiles on the outside and inside of the tubes 12, 13, 14 advantageously extend over the entire length of the respective tubes 12, 13, 14.
  • the spline profiles on the inside or outside, preferably on the Outside only to be arranged in the end regions of the tubes 12, 13, 14 over the length with which they are inserted into corresponding node elements.
  • the tubes 12, 13, 14 can be made smooth, in particular cylindrical, on the exposed area of their outside, which improves their manageability.
  • Arranging the splines continuously on the inside has the advantage that they are better protected against damage there, which could hinder twisting to achieve the self-locking frictional engagement.
  • the tubes 12, 13, 14 can be telescopically pushed into one another by twisting them in any mutual longitudinal position brought into the self-locking friction and thus attached to each other. For example, any two lengths of 4 m to - with deduction of the necessary overlap - almost 8 m can be formed with two, each 4 m long pipes 12, 13.
  • the tubes 12, 13, 14 can be drawn from the metal or molded in plastic while simultaneously forming the spline profiles, the required tolerances of the spline profiles being readily adhered to, so that the tubes 12, 13, 14 can be carried out in one rapid operation are ready to manufacture.
  • a node element shown in FIG. 5 in the form of a plug connector 15 can be used.
  • the connector 15 has on both sides of a centrally attached engagement area 16 for a turning or counter-holding tool, for example an open-end wrench, pins 17, 18 with a convex wedge profile.
  • a turning or counter-holding tool for example an open-end wrench
  • pins 17, 18 with a convex wedge profile.
  • the plug connector 15 can also be designed as a tube piece.
  • an inner connector 19 according to. Fig. 6 are used. Since this connector 19 is not accessible from the outside, it is provided to counter it when the tubes 13, 13 are twisted to produce the self-locking frictional connection on a hexagon socket 20 into which a correspondingly long Allen key engages through the tube 13.
  • the 6 shows a further possibility of connecting two tubes 13, 13 butt-butting to one another.
  • the two tubes 13, 13, which have convex wedge profiles on the outside, become a sleeve which has concave wedge profiles on the inside 22 inserted and both brought with it by mutual twisting in self-locking friction and thus in firm connection.
  • the sleeve 22 can be provided on its outside with an attack surface, not shown, for a turning tool to hold it in place during rotation.
  • a particularly firm connection of two pipes 13, 13 can be achieved in that the pipe connection shown in FIG. 5 or FIG. 6 by means of the connector 15 or 19 lying inside the pipes 13, 13 with the one shown in FIG. 6 on the outside lying sleeve 22 is combined.
  • the engagement area 16 of the plug connector 15 from FIG. 5 advantageously has a smaller outer diameter than the clear width of the sleeve 22.
  • Fig. 7 shows a cross-shaped node element 13, which has concave wedge profiles on its arms 24, 25, 26, 27.
  • the arms 24, 25 pointing up and down in FIG. 7 are placed on tubes 12 of a larger diameter, the arms 26, 27 extending laterally in FIG. 7 on tubes 13 of a medium diameter. It goes without saying that arms of the same diameter or any other combination of diameters can also be formed.
  • FIG. 8 shows a T-shaped node element 28, the vertical arm 29 of which has continuous wedge profiles on the inside, so that the node element 28 can be fastened at any point on a tube 13 which has convex wedge profiles on the outside.
  • the individual horizontal arm 30 also has concave wedge profiles on the inside with a tube diameter corresponding to the vertical arm 29.
  • FIG. 9 An angular node element 31 with convex wedge profiles in both arms 32, 33 is shown in FIG. 9.
  • the tubes 13 inserted into the node element 31 are at their inserted ends by tube pieces 14 of a smaller diameter which are arranged on the inside and which are arranged on the outside have convex wedge profiles, reinforced to increase the buckling strength of the tubes 13 in this area, which is particularly subject to buckling.
  • the kink resistance can also be increased at any point along the tube 14, as is indicated in FIG. 9 by the tube 14 inserted at the point 34.
  • Such a pipe piece 14 to be used can be inserted into the outer pipe 13 by means of a correspondingly long tool, for example an Allen key, which engages in a corresponding engagement surface of the pipe piece 14 and can be broadly connected to the outer pipe 13 at the intended location.
  • a correspondingly long tool for example an Allen key
  • the arm that extends to the left in the figure is left free to reveal its spline profiles.
  • a tube 12 of a larger diameter is plugged on the outside and connected by means of its concave spline profiles arranged on the inside to the outer convex spline profiles of this arm 25.
  • a tube 14 of a smaller diameter is inserted into the upwardly extending arms 24 and, with its convex wedge profiles arranged on the outside, is frictionally connected to the inner concave wedge profiles of this arm 24.
  • a tube 13 is arranged with an average diameter of the arm 27.
  • a plug connector 19 serves as an intermediate link.
  • Fig. 11 shows an application of a set of tube and node elements for a tubular stand 36 between a floor surface 37 and a ceiling 38.
  • the continuous tube 39 is in a base plate 40, in which convex wedge profiles are incorporated and in which Tube 39 is fixed with its concave externally arranged splines.
  • a support plate 41 at the upper end of the tube 39 is designed accordingly.
  • two cross-shaped and a T-shaped node element 25 and 28 are frictionally attached via the corresponding wedge profiles.
  • a further piece of tube 42 is used to increase the kink resistance.
  • the node elements 23, 28, 35 which can also have any other shapes, other axis angles, other arm lengths, etc., are preferably made from welded sections of tubes of the corresponding set of tubes or as die-cast parts, in which the spline profiles are formed in the same way.
  • the convex wedge profile of the tube 13 is provided with at least one, in the exemplary embodiment shown, with three axially parallel springs 43 which engage in corresponding grooves 44 in the concave wedge profile of the tube 12.
  • the width of the grooves 44 is selected so that the springs 43 can move in the grooves in the circumferential direction by a distance corresponding to the maximum permissible angle of rotation.
  • the mutual position of the springs 43 and grooves 44 is such that the path of movement is available starting from the position of the parts to be connected which are to be connected.
  • 12 shows the position after the tubes 12, 13 have been joined together.
  • the springs 43 rest against a flank of the grooves 44.
  • Fig. 13 shows the position after the relative rotation against the direction of the arrow.
  • the springs 43 are now in contact with the other flanks of the grooves 44 and prevent the tubes 12, 13 from rotating further.
  • the springs 43 can in kinematic reversal can also be arranged on the inner circumference and the grooves 44 on the outer circumference.
  • the pipe system according to the invention for connecting i.a. von Rohr is also suitable for pipes for conducting fluids, such as gases or liquids.
  • a T-shaped branch piece 46 can be pushed onto a conduit 45 provided on the outside with convex wedge profiles and, at the point where the conduit 45 has an outlet opening 47, can be brought to the desired self-locking frictional engagement by relative rotation.
  • 14 and 15 show the end or fastening position in which the outlet opening 47 of the conduit 45 communicates with a corresponding through opening 48 in the branch piece 46.
  • the flat contact of the back surfaces of the cams on the conduit 45 with the fillet surfaces of the grooves in the branch piece 46 results in a reliable seal between the conduit 45 and the branch pipe 48 of the branch piece 46.
  • the end of a tube 12, 13, 14 can, as shown in FIGS. 16 and 17, be closed by means of a stopper 50 or a cap 51.
  • the plug 50 has convex wedge profiles on a pin 52, with which it can be frictionally connected to the inner concave wedge profiles of a tube 12, 13, 14.
  • the pot-shaped cap 51 has concave wedge profiles on its inside, with which it can be connected to the outer convex wedge profiles of a tube 12, 13, 14 to produce a self-locking frictional connection.
  • the stopper 50 and cap 51 can be provided with a seal 53 which lies on the end face of the tube 12, 13, 14 and through which the tube 12, 13, 14 can be closed in a fluid-tight manner.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Joints Allowing Movement (AREA)
EP93920781A 1992-09-18 1993-09-20 Rohrsystem für rohrkonstruktionen Expired - Lifetime EP0663047B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4231333A DE4231333C2 (de) 1992-09-18 1992-09-18 Rohrsystem für Rohrkonstruktionen
DE4231333 1992-09-18
PCT/EP1993/002548 WO1994007038A1 (de) 1992-09-18 1993-09-20 Rohrsystem für rohrkonstruktionen

Publications (2)

Publication Number Publication Date
EP0663047A1 EP0663047A1 (de) 1995-07-19
EP0663047B1 true EP0663047B1 (de) 1997-03-26

Family

ID=6468306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93920781A Expired - Lifetime EP0663047B1 (de) 1992-09-18 1993-09-20 Rohrsystem für rohrkonstruktionen

Country Status (6)

Country Link
EP (1) EP0663047B1 (ja)
JP (1) JP2654473B2 (ja)
AT (1) ATE150849T1 (ja)
DE (2) DE4231333C2 (ja)
ES (1) ES2102676T3 (ja)
WO (1) WO1994007038A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009201594A1 (en) * 2008-04-21 2009-11-05 Prestmac Pty Ltd Building system
WO2012121646A1 (en) * 2011-03-04 2012-09-13 Pluseight Technology Ab Coupling arrangement

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD960154A1 (it) * 1996-06-12 1997-12-12 Lindhaus Srl Struttura di prolunga tubolare telescopica particolarmente per elettro domestici e macchine per la pulizia in genere
DE19641137C2 (de) * 1996-10-05 1998-07-09 Ifm Electronic Gmbh Befestigungsvorrichtung zum Befestigen und Positionieren eines zylinderförmigen elektronischen Gerätes
EP0937207A1 (fr) 1996-11-12 1999-08-25 Emmanuel Chene Systeme et procede d'assemblage, et dispositifs pourvus de ce systeme
FR2755671B1 (fr) * 1996-11-12 1999-01-22 Chene Emmanuel Systeme et procede d'ouverture et d'assemblage, et dispositifs pourvus de ce systeme
DE19822720A1 (de) * 1998-05-20 1999-11-25 Fickinger Helga Schraubenfreier Rohrverbinder
FI990634A (fi) * 1999-03-22 2000-09-23 Exel Oyj Voimistelukeppi
AU770065B2 (en) * 1999-07-22 2004-02-12 Cookson Holdings Pty Ltd A structural joint
DE10210885C1 (de) * 2002-03-06 2003-05-08 Benjamin Gugelberger Regalsystem mit Profilrohren und Knotenelementen
TW200801627A (en) * 2006-06-02 2008-01-01 Chicony Electronic Co Ltd A lens barrel module
DE102008014891B4 (de) * 2008-03-19 2010-02-18 Isringhausen Gmbh & Co. Kg Armlehnenbefestigung sowie Verfahren zum Fügen einer Armlehnenbefestigung
WO2010033033A1 (en) * 2008-09-04 2010-03-25 Gisle Haraldsen Arrangement at telescopic rods, particularly the butt section of fishing rods
DE102010004277A1 (de) * 2010-01-11 2011-07-14 Bellicon Ag Trampolin
WO2011109854A1 (en) * 2010-03-10 2011-09-15 Palko1Klik Pty Ltd Multipart billiards-cue
JP5748967B2 (ja) * 2010-07-20 2015-07-15 株式会社北島製作所 黒板装置
JP5848514B2 (ja) * 2011-04-05 2016-01-27 小野　辰雄 安全手摺
JP5848513B2 (ja) * 2011-04-05 2016-01-27 小野　辰雄 安全手摺
JP6581501B2 (ja) * 2012-07-11 2019-09-25 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 患者インターフェース
DE102015207168B4 (de) * 2015-04-21 2020-02-27 Bayerische Motoren Werke Aktiengesellschaft Rohrverbindung
CN104806609A (zh) * 2015-04-27 2015-07-29 中山豪真精工制品有限公司 一种用于自拍杆的伸缩装置
CN108343228B (zh) * 2017-12-29 2020-05-05 天长市华利机械实业有限公司 一种螺纹紧固式脚手架定位卡扣
KR102139864B1 (ko) * 2018-10-08 2020-07-30 장윤근 거푸집 서포트의 가로 연결장치
CN112681719A (zh) * 2020-12-20 2021-04-20 斑马找房(武汉)信息科技有限公司 一种建筑用能够快速卡合的脚手架固定装置

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US2165426A (en) * 1937-07-09 1939-07-11 Eastman Kodak Co Telescoping tripod leg
GB654517A (en) * 1948-06-16 1951-06-20 Carlton William Charles Improvements in or relating to tubular structures
US3319510A (en) * 1961-05-05 1967-05-16 Illinois Tool Works Fastener stud
DE1201619B (de) * 1963-04-03 1965-09-23 John Wilfred Sandberg Loesbare Verriegelung von teleskopartig ineinanderschiebbaren Rohrteilen
DE2642235A1 (de) * 1976-09-20 1978-03-23 Siegfried R Steindl Teleskoprohr fuer stative, gestelle und gerueste
WO1981001448A1 (en) * 1979-11-13 1981-05-28 J Porhammer Interlocking telescoping assembly
GB2158865A (en) * 1984-05-03 1985-11-20 Richard Henry Johnson Lockable telescopic members
US4585367A (en) * 1985-02-05 1986-04-29 Sears, Roebuck And Co. Releasable locking device
EP0529047B1 (de) * 1991-03-22 1995-09-13 Hans Kühl Welle-nabe-verbindung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009201594A1 (en) * 2008-04-21 2009-11-05 Prestmac Pty Ltd Building system
WO2012121646A1 (en) * 2011-03-04 2012-09-13 Pluseight Technology Ab Coupling arrangement
EP2681381A1 (en) * 2011-03-04 2014-01-08 Pluseight Technology AB Coupling arrangement
EP2681381A4 (en) * 2011-03-04 2014-08-06 Pluseight Technology Ab CLUTCH ARRANGEMENT

Also Published As

Publication number Publication date
ATE150849T1 (de) 1997-04-15
DE59305981D1 (de) 1997-04-30
ES2102676T3 (es) 1997-08-01
DE4231333A1 (de) 1994-03-24
JPH08500886A (ja) 1996-01-30
DE4231333C2 (de) 1995-05-24
JP2654473B2 (ja) 1997-09-17
EP0663047A1 (de) 1995-07-19
WO1994007038A1 (de) 1994-03-31

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